.clearfix::before,
.clearfix::after{
            content: '';
            display: table;
            clear: both;
        }

body{
    font: 14px/1.5 Helvetica Neue,Helvetica,Arial,Microsoft Yahei,Hiragino Sans GB,Heiti SC,WenQuanYi Micro Hei,sans-serif;
    min-width: 1226px;
}

.w{
    
    width: 1226px;
    margin: 0 auto;
}